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<title>天地环保工程统计表</title>
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	p span{
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	div p{
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<span>单独的span</span>
<p><span>在P标签的span</span></p>
<p>单独的P</p>

<div>单独的DIV</div>

<div><p>DIV中的P标签</p></div>
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